Axle-skein



(NoModeL) J.A. JOHNSON.

AXLE SKEIN.

No. 400,685. Patented'Apr. 2, 1889.

WITNESSES,

r I 4 JJV 'EN 01 a? 06 V I I 'torncyd,

UNITED, STATES PATENT OFFICE.

JOHN A. JOHNSON, OF MADISON, \VISOONSIN.

" AXLE-'SKEIN.

SPECIFICATION forming part of Letters Patent No. 400,685, dated, April2, 1889. Application filed June 30, 1888. Serial No. 278,627. (Nomodel.)

To all whom it may concern.-

Be it known that 1, JOHN A. JOHNSON, a citizen of the United States, anda resident of Madison, in the county of Dane and State of Wisconsin,have invented certain new and useful Improvements in Wagon-Axle Skeins;and I do hereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, which form a part of this specification,and in which- Figure 1 is a longitudinal sectional view of my improvedaxle and axle-skein; and Fig. 2 is an end view of the same, looking inthe direction denoted by the arrow in Fig. 1.

Like letters of reference denote corresponding parts in both thefigures.

My invention has relation to metallic wagon-axles of that class whichare provided with a cast-iron thimble-skein; and it consists in theimproved construction of the skein, as will be hereinafter more fullydescribed and claimed.

In the accompanying drawings, the letter A denotes the arm of a metallicwagon-axle, and B thecast-ironthimble-skein. The latter is provided withthe usual hub-flange, O, and has a rearwardly-projecting bolster, D,overlapping and protecting the axle A on its under side. This skein ispreferably made of cast-iron, and after casting it ,it is bored out tofit the axle, the centralpart of the bore being enlarged, as shown at E.This enlargement may beformed either during the process of casting theskein, or it maybe formed with the axle.

during the process of boring the same. After the skein has been bored tothe proper size to fit the axle it is seated and shrunk upon the same,so as to become firmly united thereto without the use of screws, bolts,welding, or other means of fastening. The object of constructing theskein with the central enlargement, E, is that by this construction theopposite ends of the skein will hug and clamp the axle firmer than ifthe skein had an in side bearing upon the axle along its entire length.As the metal cools it will shrink onto the axle at opposite ends of theenlargement E, thereby making a very tight and solid fit, so that it ispractically as solid and substantial as if the skein had been cast inone piece In this manner I can use an ordinary round rolled axle withoutflattening its ends, and yet provide it with a skein which shall beabsolutely safe.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States The combination, with thecylindrical j ournal of the metallic axle A, of the skein B, shrunk uponsaid journal, having the annular chamber E, and provided with the collarO and the inwardly-projecting bolster D, which collar and bolster areintegral with the skein, substantially as specified.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

JOHN A. JOHNSON. Witnesses:

' A. E. PROUDFIT,

J. H. NICHOLS.

